EP 2760022 A1 20140730 - Audio bandwidth dependent noise suppression
Title (en)
Audio bandwidth dependent noise suppression
Title (de)
Audiobandbreitenabhängige Geräuschunterdrückung
Title (fr)
Suppression de bruit dépendant de la largeur de bande audio
Publication
Application
Priority
EP 13153105 A 20130129
Abstract (en)
A system and method for audio bandwidth dependent noise suppression may detect the audio bandwidth of an audio signal responsive to one or more audio indicators. The audio indicators may include the audio sampling rate and characteristics of an associated compression format. Noise suppression gains may be calculated responsive to the audio signal. Noise suppression gains may mitigate undesirable noise in the reproduced output signal. The noise suppression gains may be modified responsive to the detected audio bandwidth. Less noise reduction may be desirable when more audio bandwidth is available. The modified noise suppression gains may be applied to the audio signal.
IPC 8 full level
G10L 21/0208 (2013.01)
CPC (source: EP)
G10L 21/0208 (2013.01); G10L 19/24 (2013.01); G10L 21/0264 (2013.01)
Citation (applicant)
US 7844453 B2 20101130 - HETHERINGTON PHILLIP A [CA]
Citation (search report)
- [Y] US 5012519 A 19910430 - ADLERSBERG SHABTAI [IL], et al
- [A] US 2006020450 A1 20060126 - MISEKI KIMIO [JP]
- [AD] US 7844453 B2 20101130 - HETHERINGTON PHILLIP A [CA]
- [XYI] "G.718: Frame error robust narrow-band and wideband embedded variable bit-rate coding of speech and audio from 8-32 kbit/s", ITU-T; STUDY PERIOD 2009-2012, INTERNATIONAL TELECOMMUNICATION UNION, GENEVA ; CH, vol. Study Group 16, 13 September 2010 (2010-09-13), pages 1 - 257, XP017452920
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
DOCDB simple family (application)
EP 13153105 A 20130129